Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad179c4e5a1ccd91…

MALICIOUS

PDF

72.0 KB Created: 2021-02-15 15:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 446edab6da277cbb34423008ccd4d60d SHA-1: 778e83b95515136e5ae9651a1480afcf6099f11b SHA-256: ad179c4e5a1ccd91a289ae675da7b90b761d948c8d82bb74f6c6f6de970d00cb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/wix?keyword=noclip+roblox+script+pastebin+2020 In PDF document text
    • http://sellamorem.com/gukemukuturuxolifenajowrpry.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_600dea4491965.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449422/normal_5fc9e4c952d8f.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/gjifHif/deruloro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461509/normal_6004ed30e346d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5fdaf5ed0d620.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/super_pinball_2_snes_romqhbgx.pdfIn PDF document text
    • https://cdn.sqhk.co/mewuwemiromi/jfRjbij/cara_mendapatkan_skin_among_us_di_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bisazabe/74250285908.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/cheque_book_printing_in_excel_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/axl_full_movie_free_in_english.pdfIn PDF document text
    • http://jasosuwer.epizy.com/68223387002.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/87717538022.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B0 5380 bytes
SHA-256: a9447d06c2ea7dbd70aca9828593da3a3c8914facd283e9993d2437d3679d9f4
font_01_sfnt_off0000e70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70A 13772 bytes
SHA-256: 9adc77dace94a3feaaeb602146b0093686a9eeadf2ac47023a3d098184c099e0